4. Now concerning their blasphemous assertion who say that the Son does not perfectly know the Father, we need not wonder: for having once purposed in their mind to wage war against Christ, they impugn also these words of His, “As the Father knoweth Me, even so know I the Father.” Wherefore, if the Father only in part knoweth the Son, then it is evident that the Son doth not perfectly know the Father. But if it be wicked thus to speak, and if the Father perfectly knows the Son, it is plain that, even as the Father knoweth His own Word, so also the Word knoweth His own Father, of whom He is the Word.